COMFORT-AIRE B-VMH30 Installation manual

INSTALLATION
MANUAL
VMH 09/12/18/24
Version C
Inverter Single Zone
Ductless Mini-Split Heat Pump
Heat Controller, Inc. • 1900 Wellworth Ave. • Jackson, MI 49203 • (517)787-2100 • www.heatcontroller.com
VMH Inverter Mini-Split
INSTALLATION MANUAL
Heat Controller, Inc.
Table of Contents
Safety Precautions
Warnings and Cautions............................................................................2
Installation Instructions
Selecting an installation location...............................................................3
Accessories..............................................................................................4
System installation....................................................................................5
Indoor unit installation...............................................................................6
Outdoor unit installation............................................................................7
Refrigerant Pipe Connection
Refrigerant pipe connection......................................................................8
Electrical Work
Electrical Work........................................................................................10
Air Purging
Air purging with vacuum pump...............................................................13
Safety and refrigerant leak check...........................................................14
Testing the System
Test Run..................................................................................................15
!
Caution
• Contact an authorized service technician for repair or maintenance of this unit.
• Contact an authorized installer for installation of this unit.
• Installation work must be performed in accordance with local and national electrical
codes and standards by authorized personnel only.
1
Heat Controller, Inc.
INSTALLATION MANUAL
VMH Inverter Mini-Split
• Read the follow SAFETY PRECAUTIONS carefully before installation.
• Electrical work must be performed by a licensed electrician. Be sure to use the correct rating of the power
cord and main circuit for the model to be installed.
• Incorrect installation due to ignoring the instruction will cause harm or damage.
n The seriousness is classified by the following indications.
! WARNING!
!
This symbol indicates the possibility of death or serious injury.
CAUTION! This symbol indicates the possibility of injury or damage to property.
The items to be followed are classified by the symbols:
This symbol denotes item that is PROHIBITED from doing.
!
1)
2)
3)
4)
5)
6)
7)
8)
9)
1)
2)
3)
WARNING!
Do not install without an authorized servicer/installer.
Install according to this installation instruction. If installation is defective, it can cause water leakage, or
electrical shock/fire.
Use the supplied accessories and specified parts for installation.
Install the indoor unit on a wall strong enough to hold the unit’s weight. Install the outdoor unit on a
raised concrete pad or blocks to provide a solid, level foundation. In a location with high winds, anchor
the unit and provide an air baffle. In snowy areas (for heat pump models), install the outdoor unit on a
raised platform so that it is higher than drifting snow. Provide snow vents.
For electrical work, follow local and national electric codes and these installation instructions. An
independent circuit and single outlet must be used. If electrical circuit capacity is not enough or defects
are found in electrical work, it will cause electrical shock or fire.
Use the specified cable and connect tightly and clamp the cable so that no external force will stress the
terminal. Loose wiring may cause overheating at the connection points and a possible fire hazard.
Wiring routing must be properly arranged so that control board cover is fixed properly. If control board
cover is not fixed perfectly, it will cause overheating at connection point of terminal, fire or electrical shock.
When charging the unit, take care not to let air/substances other than the specified refrigerant
go into refrigeration cycle. Otherwise, it will cause lower capacity, abnormal high pressure in the
refrigeration cycle, explosion and injury.
Do not modify the length of the power supply cord or use an extension cord, and do not share
the single outlet with other electrical appliances. Otherwise, it will cause fire or electrical shock.
!
CAUTION!
This equipment must be grounded and installed with a ground leakage current breaker. It may cause
electrical shock if grounding work doesn’t comply with local/national electric codes.
Do not install the unit at place where leakage of flammable gas may occur. If gas leaks and
accumulates near the unit, it may cause fire.
Carry out drainage piping as mentioned in installation instructions. If not done correctly, water may
enter the room and damage personal belongings.
2
VMH Inverter Mini-Split
INSTALLATION MANUAL
Heat Controller, Inc.
Selecting installation place
Read completely, then follow step by step.
Indoor unit
• Do not expose the indoor unit to heat or steam.
• Select a place where there are no obstacles in front or
around the unit.
• Make sure that condensation drainage can be conveniently
routed away.
• Do not install near a doorway.
• Ensure that the space on the left and right of the unit is more
than 5in.(12cm).
• Use a stud finder to locate studs to prevent unnecessary damage to the wall.
• The indoor unit should be installed on the wall at a height of 6.5ft.(2m) or more from the floor.
• The indoor unit should be installed allowing a minimum clearance of 6in.(15cm) from the ceiling.
• Any variations in pipe length may require adjustment to refrigerant charge.
• Do not expose unit to direct sunlight. The sun will fade the plastic cabinet and affect its appearance.
Outdoor unit
• If an awning is built over the outdoor unit to prevent
direct sunlight or rain exposure, make sure that heat
radiation from the condenser is not restricted.
• Ensure that the clearance around the back of the unit is
more than 12in.(30cm) and left side is more than 12in.
(30cm). The front of the unit should have more than
79in.(200cm) of clearance and the connection side (right
side) should have more than 24in.(60cm)of clearance.
• Do not place animals and plants in the path of the air
inlet or outlet.
• Take the air conditioner weight into account and select
a place where noise and vibration will not be an issue.
• Select a place so that the warm air and noise from the air conditioner do not disturb neighbors.
Rooftop installation
• If the outdoor unit is installed on a roof structure, be sure to level the unit.
• Ensure the roof structure and anchoring method are adequate for the unit location.
• Consult local codes regarding rooftop mounting.
• If the outdoor unit is installed on roof structures or external walls, this may result in excessive noise and vibration, and may also be considered a non-serviceable installation.
3
INSTALLATION
INSTRUCTIONS
Heat Controller,
Inc.
INSTALLATION MANUAL
VMH Inverter Mini-Split
Accessories
Number
Q ty
Qty/unit
Name of Accessories
1
Installation Plate
2
Plastic Expansion Sheath
INSTALLATION INSTRUCTIONS
1
8
3
Accessories
8
1
1
4
ty
1
1
8
Parts
you must
purchase
(A minimum
8
pipe wall-thickness
1 0.7mm is required.)
of
5/ 8 (>21000Btu/h)
1
1/ 4 (<21000Btu/h)
3/ 8 (>21000Btu/h)
3/ 8 (<12000Btu/h)
Liquid side
Plastic Expansion
ConnectingSheath
pipe
Assembly
Self-tapping
Screw
A ST3.9X25
6
Gas side
Seal (See Page 8 for details)
` `
3
Q
`
2
Seal (See Page 8 for details)
Name of Accessories
Drain Joint(See page 8 for details)
5
Installation
Plate
4
`
Number
Self-tapping Screw A ST3.9X25
1/ 2 (>12000Btu/h)
Drain Joint(See page 8 for details)
6
7
RemoteLiquid
controller
side
Connecting
3/ 8 (>21000Btu/h)
pipe
Self-tapping Screw B ST2.9X10
8 Assembly
3/ 8 (<12000Btu/h)
Gas side
Remote controller holder 1/ 2 (>12000Btu/h)
9
`
5
1/ 4 (<21000Btu/h)
`
1
` `
Parts you must
purchase (A minimum
2
`
pipe wall-thickness
of 0.7mm is required.)1
`
8 (>21000Btu/h)
Note: Except the above parts provided,5/the
other parts needed during installation you must
purchase.
1
7
Remote controller
8
9
5 Screw B ST2.9X10
4 Self-tapping
2
Remote controller holder
3
2
1
CAUTION
6in.(15cm)
or more
1
Note: Except
above
parts
provided,
other parts needed during installation you must
Usethe
a stud
finder
to locate
studs the
to prevent
purchase. unnecessary damage to the wall.
5in
.(12
cm
)or
mo
re
A minimum pipe run of 10ft.(3m) is required
to minimise vibration & excessive noise.
Two of the A, B and C directions should be
free from obstructions.
3
5in.(
2
12cm
) or m
ore
6in.(15cm) Air
or moFreilter
CAUTION
1
Remote
Controller
5in
Toods
needed
for
installation:
Use a stud
finder to
locate
studs to prevent
.(12
cm
)or
7
mo
>6 3/5in.(2m)
SET TEMPERATURE( C)
re
Additional drain pipe
HEALTH
HIGH
MED
LOW
AUTO
COOL
DRY
HEAT
unnecessary
Level
gauge damage to the wall.
A minimum pipe run of 10ft.(3m) is required
Screwdriver
to minimise vibration & excessive noise.
Electric
core
drill (o .26in.(65mm))
Two ofdrill,
the A,Hole
B and
C directions
should be
Flaring
toolobstructions.
set
Mounting screw B
free from
ST2.9x10-C-H
Torque wrench
Remote Controller
Remote controller
9
7
holder
Spanner (half union)
8
Hexagonal wrench (1.5in.(4mm))
Gas-leak detector
A
Vacuum pump
Mounting screw B
Gauge manifold
ST2.9x10-C-H
User manual
Remote controller
9
B
holder
8
Thermometer
MultimeterThis illustration is for explanation purposes only.
Pipe cutterCopper lines must be insulated independentlyA.
Measure Tape
Fig.3
ADJUST
ON/OFF FAN SPEED
MODE
SWING
SLEEP
TIMER ON
CLEAR
AIR
RESET LOCK
TIMER OFF
AUTO FOLLOW
LED
ME
CLEAN
DISPLAY TURBO
5in.(
12cm
) or m
ore
Air F
ilter
>6 3/5in.(2m)
SET TEMPERATURE( C)
HEALTH
HIGH
MED
LOW
more
ADJUST
ON/OFF FAN SPEED
MODE
SWING
SLEEP
TIMER ON
CLEAR
AIR
RESET LOCK
TIMER OFF
12in
AUTO FOLLOW
LED
ME
CLEAN
DISPLAY TURBO
.(30
cm)
Air Outlet
or m
ore
) or
0cm
.(20
.(30
cm)
Air Outlet
or m
ore
4B
This illustration is for explanation purposes only.
Copper lines must be insulated independently .
4
4
) or
0cm
.(20
79in
re
mo
Loop the
.(60
cm
) or
Wrapping tape
mo
cm)
.(30
12in
re
cable.
C
ore
or m
the
connective
CAUTIONLoop
cable.
24in
ore
or m
“U”
bend (cable)
connective
24in
24in.(60cm) or
12in
cm)
.(30
12in
re
mo
more
79in
Additional drainWrapping
pipe
tape
24in.(60cm) or
AUTO
COOL
DRY
HEAT
• Two of the “A,” “B” or “C”
directions
C
should be free from obstructions.
.(60
Fig.3
cm
) or
mo
re
VMH Inverter Mini-Split
Heat Controller, Inc.
INSTALLATION MANUAL
CAUTION
• Use a stud finder to locate studs to
prevent unnecessary damage to the
wall.
• A minimum pipe run of 10 ft. (3m)
is required to minimize vibration &
excessive noise.
Indoor unit installation
(wall-mounted type)
1. Installation Plate
A. Mount the installation plate horizontally on
structural parts (studs) of the wall with proper
clearance around the installation plate.
B. If the wall is made of brick, concrete or the
like, drill eight (8) 0.2in (5mm) diameter holes
in the wall.Insert anchor for appropriate
mounting screws.
C. Fit the installation plate on the wall with eight
(8) type “A” screws.
NOTE:
Fit the Installation Plate and drill holes in the wall
according to the wall structure and corresponding
mounting points on the installation plate. The
Installation Plate may be slightly different according
to the different models of indoor unit.
2. Drill a hole in the wall
A. Determine hole positions according to the diagram detailed in Fig.5. Drill one (1) hole ( 3in.
(65mm)) slanting slightly toward the outdoors,
as shown in Fig. 6.
B. Always use wall hole conduit when drilling
metal grid, metal plate or the like.
3. Connective Pipe and Drainage Installation
A. Run the drain hose sloping downward. Do not
install the drain hose as illustrated in Fig.7.
B. When connecting extension drain hose, insulate the connecting part of extension drain
hose with a shield pipe, do not let the drain
hose slack.
C. For the left-hand and right-hand piping, remove the pipe cover from the side panel.
D. For the rear-right-hand and rear-left-hand piping,
installconnecting
the piping extension
as shown. drain
Bend hose,
the con2.
When
nective
pipe
to
be
laid
at
4in.(43mm)
height
insulate the connecting part of extensionor
less
from
the wall.
drain
hose
with a shield pipe, do not let
E. Fixthe
thedrain
end of
the slack.
connective pipe. (Refer to
hose
Tightening Connection in REFRIGERANT
PIPING CONNECTION)
INSTALLATION INSTRUCTIONS
Wall Cap
Connective pipe installation
1. For the left-hand and right-hand piping,
remove the pipe cover from the side
panel.
Fig. 8
5
Fig.8
Rear-right piping
Heat Controller, Inc.
VMH Inverter Mini-Split
INSTALLATION MANUAL
4. Indoor unit installation
A. Pass the piping through the hole in the wall.
B. Put the upper claw at the back of the indoor unit
on the upper hook of the installation plate, move
the indoor unit from side to side to see that it is
securely fastened (see Fig.11 & Fig.12).
INSTALLATION INSTRUCTIONS
C. Separate the bottom of the indoor unit from the
2. When
connecting
extension drain hose,
wall
by inserting
a spacer.
insulate the connecting part of extension
Fig. 9
D. Push
the lower part of the indoor unit up on the
drain hose with a shield pipe, do not let
wall,the
then
move
the
indoor unit from side to side,
drain
hose
slack.
up and down to check if it is secure.
CAUTION
Connective pipe installation
• 1.
Connect
indoorand
unitright-hand
first, thenpiping,
the
For the the
left-hand
outdoor
unit.
remove the pipe cover from the side
• Dopanel.
not allow the piping to let out from the
of the
indoor unit. and rear-left-hand
2.back
For the
rear-right-hand
install
theletpiping
as shown
Fig.9.
• Bepiping,
careful
not to
the drain
hoseinslack.
Bend
the connective
pipeauxiliary
to be laid
at 4in.(43mm)
• Heat
insulate
both of the
piping.
less
thehose
wall.is located at the
• Beheight
sure or
that
thefrom
drain
3.lowest
Fix theside
endofofthe
thebundle.
connective
pipe. (Refer
Locating
at the
to
Tightening
Connection
in
REFRIGERANT
upper side can cause drain pan to overflow
PIPING CONNECTION)
inside the unit.
• Never intercross nor intertwine the power
wire with any other wiring.
• Run the drain hose sloped downward to
drain out the condensed water smoothly.
Fig.8
Rear-right piping
Right-hand piping
Fig. 10
Rear-left piping
Left-hand piping
Fig.9
Fig. 11
5.
CAUTION
Connect the indoor unit first, then the
outdoor unit.
Do not allow the piping to let out from
theand
backwrapping
of the indoor unit.
Piping
Be careful not to let the drain hose slack.
A. Bundle
theinsulated
tubing, connecting
cable,
and drain
hose
Heat
both of the
auxiliary
piping.
sure
that the
drainashos
e is located
at
withBe
tape
securely,
evenly
shown
in Fig.13.
the lowest side of the bundle. Locating
B. Because
the condensed water from rear of the inat the upper side can cause drain pan
doortounit
is
gathered
ponding
overflow
insideinthe
unit. box and is piped
out Never
of room.
Do not put
else
the box.
intercross
noranything
intertwist
theinpower
wire with any other wiring.
Run the drain hose sloped downward to
drain out the condensed water smoothly.
6
Indoor unit outline
Connective pipe
Spacers
43
4. Piping and wrapping
Bundle the tubing, connecting cable, and drain
hose with tape securely, evenly as shown in
Fig.11.
Because the condensed water from rear of the
indoor unit is gathered in ponding box and is
piped out of room. Do not put anything else in
the box.
.
.. .
. ..
.......................................................................................
. . . . . ...... . . .... ... .
.......
............
Fig.10
Fig. 12
Indoor unit
Connective
cable
Drain hose
Ponding box
Pipe room
Connective
pipe
Wrapping belt
Fig. 13
Fig.11
VMH Inverter Mini-Split
Heat Controller, Inc.
INSTALLATION MANUAL
Outdoor Unit Installation
Outdoor installation precaution
• Install the outdoor unit on a rigid base to prevent
increasing noise level and vibration.
• Determine the air outlet direction where the
discharged air is not blocked. If the installation
place is exposed to strong winds, ensure the unit
is lengthwise along the wall or provide a suitable
air baffle.
• If suspending the unit, follow the bracket manufacturer’s instructions.
Fig. 14
• Use a raised concrete pad or concrete blocks to
provide a solid, level surface. Securely anchor
the unit down with bolts.
• Be sure there are no obstacles which block radiating air.
• In a snowy area, install the outdoor unit on a
raised platform that is higher than drifting snow.
Anchoring outdoor unit
Anchor the outdoor unit with 5/16” (8mm) or 3/8”
(10mm) bolt and nut tightly and horizontally on a
concrete or rigid mount.
Model
(Btu/h)
Fig. 15
Mounting Dimensions
A in. (mm)
B in. (mm)
Outdoor unit dimensions
WxHxD in. (mm)
9,000/12,000
29.9 x 23.2 x 11.2 (760 x 590 x 285)
20.87 (530)
11.42 (290)
18,000
33.3 x 27.4 x 13.2 (845 x 695 x 335)
22.04 (560)
13.19 (335)
24,000
35.2 x 33.9 x 13.0 (895 x 860 x 330)
22.2 (564)
13.19 (335)
Drain joint installation
Fit the seal into the drain elbow, then insert the drain
joint into the base pan hole of outdoor unit, rotate
90° to securely assemble them. Connecting the drain
joint with an extension drain hose (locally purchased)
is recommended.
Fig. 16
7
draining off the outdoor unit during the heating
mode.
Heat Controller, Inc.
Seal
Drain pipe
VMH Inverter Mini-Split
INSTALLATION MANUAL
Fig.46
Refrigerant pipe
connection
Refrigerant
Pipe
Connection
1. Flaring work
Main cause for refrigerant leakage
is due to defect in the flaring work.
Carry out correct flaring work
using the following procedure:
A: Cut the pipes and the cable.
linepiping
set kitkit
oraccessory
copper tubes/pipes
1. Use the
or pipes
purchased locally.
locally.
purchased
2. Measure the distance between the indoor
and the outdoor unit.
3. Cut the
a little longer
thethan
the pipes
pipes/tubes
a littlethan
longer
measured
distance.
the measured
distance.
4. Cut the
the cable
cable 1.5m
1.5mlonger
longerthan
thanthe
thepipe
pipe/
length.
tube
length.
90
Fig.
17
Fig.47
Pipe
Reamer
Point down
B: Burr removal
1. Completely remove all burrs from the cut
cross section of pipe/tube.
2. Put the end of the copper tube/pipe in a
downward direction as you remove burrs in
order to avoid dropping burrs into the tubing.
Fig.48
Fig. 18
Flare nut
C: Putting nut on
Remove flare nuts attached to indoor and
outdoor unit, then put them on pipe/tube
having completed burr removal.(not possible
to put them on after flaring work)
Copper tube
D: Flaring work
Firmly hold copper pipe in a die in the dimension
shown in the table below.
Outer diameter
in. (mm)
o 1/4" (6.35)
o 3/8" (9.35)
o 1/2" (12.7)
o 5/8" (15.875)
Fig. 19
Fig.49
A in. (mm)
Max.
0.05 (1.3)
0.06 (1.6)
0.07 (1.8)
0.09 (2.4)
Oblique Roughness
Min.
0.03 (0.7)
0.04 (1.0)
24
0.04 (1.0)
0.09 (2.2)
8
Burr
VMH Inverter Mini-Split
INSTALLATION MANUAL
Heat Controller, Inc.
Refrigerant Pipe Connection
Tightening Connection
• Align the center of the pipes.
• Sufficiently tighten the flare nut with fingers, and then
tighten it with a spanner and torque wrench as shown in
Fig. 20 & 21.
Outer
Diameter
o 1/4" (6.35)
o 3/8" (9.35)
o 1/2" (12.7)
o 5/8" (15.87)
Tightening
torque
11.57 ft-lb
(160 kgf-cm)
21.69 ft-lb
(300 kgf-cm)
36.17 ft-lb
(500 kgf-cm)
54.28 ft-lb
(750 kgf-cm)
Additional tightening
torque
14.46 ft-lb
(200 kgf-cm)
25.3 ft-lb
(350 kgf-cm)
39.78 ft-lb
(550 kgf-cm)
57.90 ft-lb
(800 kgf-cm)
Fig. 20
Caution
Excessive torque can break nut depending on
installation conditions.
Fig. 21
Fig. 22
9
Heat Controller, Inc.
INSTALLATION MANUAL
VMH Inverter Mini-Split
Electrical Work
Electric safety regulations for the initial Installation
1. Power voltage should be in the range of 90%~110%of rated voltage.
2. The creepage protector and main power switch with a 1.5 times capacity of Max. Current of the unit should
be installed in power circuit.
3. Ensure the air conditioner is grounded well.
4. Connect wiring to the unit according to the electrical diagram located on the panel of the outdoor unit.
5. All wiring must comply with local and national electrical codes and be installed by qualified and skilled
electricians.
6. An individual branch circuit and single receptacle used only for this air conditioner must be available.
CAUTION
1) Never fail to have an individual power circuit specifically for the air conditioner.
As for the method of wiring, be guided by the circuit diagram posted on the inside of control cover.
2) The screws which fasten the wiring in the casing of electrical fittings are liable
to come loose from vibrations to which the unit is subjected during the course
of transportation. Check them and make sure that they are all tightly fastened. (If
they are loose, it could cause burn-out of the wires.)
3) Specification of power source.
4) Confirm that electrical capacity is sufficient.
5) See that the starting voltage is maintained at more than 90 percent of the rated
voltage marked on the name plate.
6) Confirm that the cable thickness is as specified in the power source specification.
7) Always install an earth leakage circuit breaker in a wet or moist area.
8)
The following would be caused by voltage drop.
Vibration of a magnetic switch, which will damage the contact point, fuse breaking,
disturbance of the normal function of the overload.
9) The means for disconnection from a power supply shall be incorporated in the
fixed wiring and have an air gap contact separation of at least 3mm in each
active(phase) conductors.
10
VMH Inverter Mini-Split
Heat Controller, Inc.
INSTALLATION MANUAL
Electrical
Work
ELECTRICAL WORK
Power supply
208-230V~60Hz
Minimum norminal cross-sectional
area of conductors:
Input Rated Amp
(Switch/Fuse)
Rated current Nominal cross-sectional
area
of appliance
(A)
(ft2)/(mm 2)
8.1/0.75
>3 and <6
10.8/1
>6 and <10
>10 and <16
16.21.5
27/2.5
>16 and <25
32A/25A
(<12000Btu/h)
40A/30A
(>12000Btu/h)
NOTE: The supply voltage must be consistent
with the rate voltage of the air conditioner.
Connect the cable to the indoor unit
NOTE: Before performing any electrical
work, turn off the main power to the system.
Panel
1. The inside and outside connecting cable can
be connected without removing the front grille.
2. Connecting cable between indoor unit and
outdoor unit shall be approved polychloroprene
sheathed flexible cord, type designation
• Do not H07RN-F
touch the or
capacitor
even if you have
heavier cord.
3. Lift the the
indoor
unit or
panel
up, remove
the
disconnected
power
electric
shock hazboxyour
coversafety,
by loosening
the screw
ard mayelectrical
occur. For
you should
start
as
shown
in
Fig.22.
repairing at least 5 minutes after the power is
4. Ensure the colour of wires of outdoor unit
disconnected.
and the
,, terminal Nos. are the same to the
indoor s respectively.
• The power
supplied
from
Outdoorwith
Unit.
5. Wrapisthose
cables
notthe
connected
terminals
with
insulation
tapes,
so
that
they
Up to four indoor units are connected with signal
will
not
touch
any
electrical
components.
wires or power cords.
Secure the cable onto the control board with
the cord clamp.
Electrical box
cover
Terminal block of indoor unit
L1 L2
L1 L2
S
S
or
Connect the cable to the indoor unit
To outdoor unit
Fig.
23
Fig.22
NOTE: Before performing any electrical work, turn
off the main power to the system.
1. The inside
to outside
connecting
cable
can beunit
conConnect
the cable
to the
outdoor
nected1.without
removing
the
front
grille.
Remove the cover control from the unit by
loosening
3 screws.
See unit
Fig.23.
2. Connecting
cablethe
between
indoor
and outdoor
2.
Dismount
caps
on
the
conduit
panel.
unit shall be approved polychloroprene
sheathed flex3. Temporarily mount the conduit tubes(not included)
ible cord,
type
designation
H07RN-F
or
heavier cord.
on the conduit panel.
4. indoor
Properly
connect
powerthe
supply
and low
3. Lift the
unit
panelboth
up, the
remove
electrical
voltage
lines
to
the
corresponding
terminals
on
box cover by loosening the screw as shown in Fig.23.
the terminal block.
4. Ensure
the color
wires
of outdoor with
unit local
and codes.
the ter5. Ground
theofunit
in accordance
minal 6.
Nos.
are the
same
to wire
the indoors
Be sure
to size
each
allowing respectively.
several inches
longer than the required length for wiring.
5. Wrap those
cables not connected with terminals with
7. Use lock nuts to secure the conduit tubes.
insulation tape, so that they will not touch any electrical components. Secure the cable onto the control
board with the cord clamp.
10
11
To outdoor unit
Outdoor unit
Terminal block
Ove
r13
/5in
.(40
mm
)
G
Conduit panel
Connecting
cable
Cover control
Power supply
cord
Fig.23a
will not touch any electrical components.
Secure the cable onto the control board with
the cord clamp.
Heat Controller, Inc.
To outdoor unit
To outdoor unit
VMH Inverter Mini-Split
Fig.22
INSTALLATION MANUAL
Electrical Work
Connect the cable to the outdoor unit
Connect
to thefrom
outdoor
unit
thecable
cover control
the unit
by
1. Removethe
loosening
3 screws.
1. Remove
thethe
cover
control See
from Fig.23.
the unit by loosening the (3)
Seecaps
Fig. on
24.the conduit panel.
2.screws.
Dismount
3.Dismount
Temporarily
mount
conduit
tubes(not included)
2.
caps
on thethe
conduit
panel.
on the conduit panel.
3.
mount both
the conduits
(notsupply
included)
the conduit
4.Temporarily
Properly connect
the power
andon
low
panel.
voltage lines to the corresponding terminals on
4. Properly
connect
both the power supply and low voltage
the terminal
block.
lines
to
the
corresponding
terminals
the codes.
terminal block.
5. Ground the unit in accordance
withon
local
6.Ground
Be surethe
to unit
sizeineach
wire allowing
several
5.
accordance
with local
and inches
national eleclonger
than
the
required
length
for
wiring.
tric codes.
7. Use lock nuts to secure the conduit tubes.
6. Be sure to size each wire allowing several inches longer
than the required length for wiring.
7. Use lock nuts to secure the conduit tubes.
Outdoor unit
Terminal block
Ove
r13
/5in
.(40
mm
)
Conduit panel
G
Connecting
cable
Power supply
cord
Cover control
Fig. 24
Fig.23a
WARNING
• Be sure to comply with local and national electric
codes while running the wire from the indoor unit to
10
the outdoor unit.
• Every wire must be connected firmly.
• No wire should be allowed to touch refrigerant tubing,
the compressor or any moving parts.
• Loose wiring may cause the terminal to overheat or
result in unit malfunction.
• A fire hazard may also exist. Therefore, be sure all
wiring is tightly connected.
• Disconnecting means must be provided and shall be
located within sight from and readily accessible from
the unit’s location.
• Connecting cable with conduit shall go through the
hole of the conduit panel.
• Power connecting cable connected to the indoor and
outdoor unit should meet: UL 1015PVC 16# o0.05"
(o1.3mm)
• Power cord connected to the outdoor unit should
meet: UL 1015PVC 14# o0.08" (o2.1mm)
Note : To prevent wires loosening or leaving
the Cord Clamp, please select proper cord
diameter to fill the holes of the cord clamp.
Fig. 25
12
VMH Inverter Mini-Split
INSTALLATION MANUAL
Heat Controller, Inc.
Air Purging
Air and moisture in the refrigerant system have undesirable effects as indicated below:
• Pressure in the system rises.
• Operating current rises.
• Cooling or heating efficiency drops.
• Moisture in the refrigerant circuit may freeze and block capillary tubing.
• Water may lead to corrosion of parts in the refrigeration system.
Therefore, the indoor unit and tubing between the indoor and outdoor unit must be leak tested and evacuated
to remove any noncondensables and moisture from the system.
Air purging with vacuum pump
Preparation
• Check that each tube(both liquid and gas side tubes) between the indoor and outdoor units have
been properly connected and all wiring for the test run has been completed. Remove the service
valve caps from both the gas and the liquid side on the outdoor unit. Note that both the liquid and the
gas side service valves on the outdoor unit are kept closed at this stage.
• Pipe length and refrigerant amount:
Connective Pipe Length Air Purging Method
Additional amount of refrigerant to be charged
Less than 16.5 ft. (5m)
Use vacuum pump
­­­———————
More than 16.5 ft. (5m)
Use vacuum pump
1/4" (Liquid side)
3/8” (Liquid side)
(Pipe length-16.5ft)x5 oz/ft (Pipe length-16.5ft)x5 oz/ft
13
Heat Controller, Inc.
VMH Inverter Mini-Split
INSTALLATION MANUAL
Air Purging
• When relocating the unit to another place, perform evacuation
using vacuum pump.
• Make sure the refrigerant added into the air conditioner is liquid
form.
Caution in handling the packed valve
• Open the valve stem until it hits against the stop. Do not try to
open it further.
Fig. 26
• Securely tighten the valve stem cap with a spanner or the like.
• Valve stem cap tightening torque (see tightening torque table).
When Using the Vacuum Pump
(For method of using a manifold valve, refer to its operation
manual.)
1. Completely tighten the flare nuts, A, B, C, D, connect the manifold valve charge hose to a charge port of the low-pressure
valve on the gas pipe side.
Fig. 27
2. Connect the charge hose connection to the vacuum pump.
3. Fully open the Lo handle of the manifold valve.
4. Operate the vacuum pump to evacuate. After starting evacuation, slightly loose theflare nut of the Lo valve on the gas pipe
side and check that the air is entering(Operation noise of the
vacuum pump changes and a compound meter indicates 0
instead of minus)
-29.92 inHg
Lo Handle
Hi Handle
5. After the evacuation is complete, fully close the Lo handle
of the manifold valve and stop the operation of the vacuum
pump. Evacuate for 15 minutes or more and check that the
compound meter indicates -29.92 inHg (-1x105Pa).
6. Turn the stem of the packed valve B about 45° counterclockwise for 6~7 seconds after the gas comes out, then tighten the
flare nut again. Make sure the pressure display in the pressure
indicator is a little higher than the atmosphere pressure.
7. Remove the charge hose from the Low pressure charge hose.
8. Fully open the packed valve stems B and A.
9. Securely tighten the cap of the packed valve.
14
Fig. 28
VMH Inverter Mini-Split
Heat Controller, Inc.
INSTALLATION MANUAL
TEST RUNNING
Safety and
and leak
leakage
check
Safety
check
Electrical safety check
Perform the electric safe check after completing installation:
1. Insulated resistance
The insulated resistance must be more than 2M .
2. Grounding work
After finishing grounding work, measure the grounding resistance by visual detection and
grounding resistance tester. Make sure the grounding resistance is less than 4 .
3. Electrical leakage check (performing during test run).
running)
During test operation after finishing installation, the serviceman can use the electroprobe
and multimeter to perform the electrical leakage check. Turn off the unit immediately if
leakage happens. Check and find out the solution ways till the unit operate properly.
Refrigerant
leak check
Gas leak check
1. Soap water method:
Apply a soap water or a liquid neutral detergent
on the indoor unit connection or outdoor unit
connections by a soft brush to check for leakage
of the connecting points of th piping. If bubbles
come out, the pipes have leakage.
2. Leak detector
Use the leak detector to check for leakage.
Indoor unit
check point
D
C
B
A
Cover
Outdoor unit
check point
CAUTION
A: Lo packed valve B: Hi packed valve
C and D are ends of indoor unit connection.
Fig. 29
Fig.27
Test
TestRun
running
Perform test operation after completing gas leak check at the flare nut connections and
electrical safety check.
Check that all tubing and wiring have been properly connected.
Check that the gas and liquid side service valves are fully open.
1. Connect the power, press the ON/OFF button on the remote controller to turn the unit on.
2. Use the MODE button to select COOL, HEAT, AUTO and FAN to check if all the functions
work
well.
works
well.
3.
temperature is
is too
too low(lower
low(lower than
the unit
unit cannot
3. When
When the
the ambient
amient temperature
than 62OF),
62OF), the
cannot be
be controlled
controlledby
by
the
cooling
mode,
manual
operation
cancan
be be
used.
Manual
operatheremote
remotecontroller
controllertotorun
runinat
cooling
mode,
manual
operation
taken.
Manual
tion
is usedisonly
when
remote
controller
is disable
maintenance
necessary.
operation
used
onlythe
when
the remote
controller
is or
disable
or maintenance
necessary.
Hold the panel sides and lift the panel up to an angle until it remains fixed with a clicking
sound.
Press the Manual control button to select the AUTO or COOL, the unit will operate under
Forced AUTO or COOL mode(see User Manual for details).
4. The test operation should last about 30 minutes.
AUTO/COOL
Manual control
Button
Fig. 30
14
15
09/2010
04/2009